Former world heavyweight champion Tyson Fury has challenged WBA Super and IBF king Anthony Joshua to a rowing race for charity.

Fury (25-0, 18 KOs) is on the verge of making a comeback following a two-and-a-half-year hiatus from boxing and with Joshua (20-0, 20 KOs) his primary target, the pair have been trading insults on social media for some time.

Joshua has previously referred to Fury as "fat", but the self-proclaimed 'Gypsy King' is confident he'll emerge victorious should the pair compete in the gym.